What do anons think of the actual DPRK proposal put forward by Kim Il Sung in the early 1980s? Apparently it's what the government still upholds.
"President Kim Il Sung advanced a plan for founding the Democratic Confederal Republic of Koryo at the Sixth Congress of the Workers' Party of Korea in October Juche 69 (1980).
He stated that the most realistic and reasonable way to reunify the country independently, peacefully and on the principle of great national unity was to draw the north and south together into a confederal state, leaving the ideas and social systems existing in the north and south as they were. He therefore proposed a new plan to reunify the country by founding a confederal republic through the establishment of a unified national government on condition that the north and the south recognize and tolerate each other's ideas and social system, a government in which the two sides are represented on an equal footing and under which they exercise regional autonomy respectively with equal rights and duties.
He recommended that in the unified state of a confederal type a supreme national confederal assembly should be formed with an equal number of representatives from north and south and an appropriate number of representatives of overseas nationals and that this assembly should organize a confederal standing committee to guide the regional governments of the north and south and to administer all affairs of the confederal state.
He added that it would be a good idea to call the confederal state the Democratic Confederal Republic of Koryo.
The DCRK should be a neutral country which does not participate in any political, military alliance or bloc. As a unified state, embracing the whole of the territory and people of the country, it should pursue a policy which agrees with the fundamental interests and demands of the entire Korean people."
For more detail see:
http://www1.korea-np.co.jp/pk/027th_issue/98012104.htm